Vise.



Patented Aug. l5, |899. C. J. JACKSON.

VISE.

gApplcation filed Nov. 10, 1898.)

No.v 631,013.

We Model() UNTTED STATES PATENT OFFICE.

CHARLES J. JACKSCN, OF'ERIE, PENNSYLVANIA.

VISE.

SPECIFICATION forming part of Letters Patent No. 631,013, dated August 15, 1899.

Application filed November 10, 1898. Serial No. 696,006. (No model.)

To @ZZ whom, it may concern,.-

Be it known that I, CHARLES J. JACKSON, a citizen of the United States,and a resident of Erie, county of Erie, and State of Pennsylvania, have invented certain new and useful Improvements in Vises, of which the following is a specilication.

The main object of this invention is to improve the construction of vises or gripping instruments of the general character disclosed in my Patent No. 563,040, of June 30,1896.

In the accompanying drawings, Figure l is a side view of the improved vise, parts being broken away. Fig. 2 is a view at right angles to Fig. l. Fig. 3 is a bottom plan view of the upper-jaw holder. Fig. 4 is a sectional view on line 4 +L of Fig. 1, and Fig. 5 is a side view of one of the sections of the jaw. Figs. 6 and 7 show modifications.

d and b are the main parts of the body of the vise, being connected together on one side by a taper pin c and on the other side being detachably connected by a bolt d. The part a carries the screw e., the bottom of which is connected with the upper jaw, so as to move the same, as common in vises. Said upper jaw consists of a bodyf and cover g, suitably secured together, as by bolts h.

e' is a socket in which the gripping-jaw, formed of several reversible metal sections, each section having liat parallel sides and both ends at right angles to the sides, is held.

In my patented construction it has been found by practical use that the metal sections sometimes become loosened in the socket and fall out, even though quite firmly clamped when first put together. To overcome this trouble, I now propose to form notches k at the middle of the two vertical edges of each of said sections, and on the inside of the body f and of the cover g to form projecting lugs Z, adapted to enter said notches when the body and cover are drawn together, said lugs being stepped in position to correspond with the stepped location of the notches owing to the arrangement of the sections. Instead of making the inner V-shaped bottom of the holder of two flat planes, as in my patent above referred to, I now form such bottom of several steps m, one for each section j, the height of each step being equal to the projection of one section above the sect-ion next below it, as indicated at n. This construction gives a much better bearing for the inner ends of the sections and avoids unnecessary wear on the edges, which when the sections are reversed will become gripping edges. Preferably the middle section j' is a little shorter and may be also Vthicker than the sections 7', so as to leave a larger space o into which the pipe or other body p to be gripped can extend to allow for wear and for several of the gripping edges q to come in contact with said pipe.

The lower jaw has two rows of sections j in suitable holders, between which the upper jaw works.

- The lower holders are formed as follows: fr isa metal base-plate, at one edge of which are cast two vertical extensions s and between which are two L-shaped extensions t, separated by a space u. g are covers adapted to be secured to extensions sand to partially surround extensions t, as shown in Fig. 4, leaving sockets z" for metal sectionsj iu just the same manner as described in connection with the upper jaw. In the lower jaw lugs Z are formed on the inside of the covers and on the outer sides of the extensions t. It will be understood that the sections j in the lower jaw have central notches lo and are in all respects like those in the upper jaw.

o are screws passing through the covers and bearing against extensions t, which screws may be adjusted to accommodate slight variations in the thickness of sections j, the bolt-holes w being slightly elongated, so that the covers can be moved longitudinally for such purpose. By turning screws o the adjustable channel-covers g (before the covers are firmly secured to extensions s) will be moved and the sections j pressed together, and the sections will have a long iiat bearing against the short arm of the L-shaped extensions t, which form one end of the socket and which is a stronger and better construction than with the screw pressing directly against the center of the first section, as in the patent above mentioned. In the latter construction pressing the jaws against the intermediate body with great force will occasionally break the section next to the adjusting or clamping screw; but in the improved construction such breaking is obviated.

Fig. 6 shows a section j as wide as it is long.

IOC

Sections of this shape may have notches k la at the middle of the four edges. These sections can be picked up at random and put into the holders, either side facing, say, inward toward the center of the jaw and either edge facing outward toward the opposite jaw. Sections of the form iirst described can be picked up at random and put into the holders with either side facing inward and with either of the two ends facing the other jaw.

Vhile it is preferred to notch several edges of each section, I may sometimes notch one side only, as at lo", Fig. 7, in which case one part only, 'as the cover g, will have lugs Z.

The sections j, which are equal in length,

can be used in jour diiferent positions without interference by the described notches and cooperating lugs.

Myimprovement does not increase the number of parts in the vise nor substantially the cost of manufacture, while at the same time it adds to the reliability of the apparatus, IVhile it is necessary or desirable to provide notches on both edges or on all the edges of the sections, it is not considered essential to have lugs coperating simultaneously with both sets of notches.

Having described my invention, what I claim isl. A vise or gripping in strument having one or more gripping-jaws formed of several metal sections, and holders therefor, said sections being reversible end for end and having notches in their edges, and lugs projecting from the inside of the holder and engaging said notches in either position of said sections, as set forth.

2. Aviseorgrippinginstrumenthavingone or more gripping-jaws formed of several reversible metal sections of uniform length,each section having flat parallel sides and both ends at right angles to the sides, and held to form a step gripping-surface, said sections having central edge notches 7c 7s', a holder for the sections, there being lugs on the inside of the holder adapted to engage said notches whichever way the sections are turned, as set forth.

3. The combination in a gripping-jaw of a holder having a rear wall of approximately the contour of the gripping-surface, several sections of metal of equal length and with right-angled ends held in said holder, the rear ends bearing against said Wall and the forwardv ends yforming a step grippingzsurface, said rear wall being composed of steps m corresponding to the step gripping-surface.

4. In a vise or gripping instrument a base, vertical extensions s, L-shaped extensions and covers g forming separate sockets i', in combination with gripping-sections j in each socket, as set forth.

5. A fiat, reversible metal sectionj for gripping-jaws having central edge notches la 7c', for the purpose set forth.

6. The combination in a sectional-j aw vise, of a base, vertical extensions from the base, jaw-sections, adjustable covers partially inclosing the sections, and screws passing through the covers and bearing against the vertical extensions, whereby said screws can adj ust the covers to clamp the sections against said vertical extensions.

7. In a vise or similar jaw the combination of a holder-socket one end of which is stationary and the opposite end of which is movable, an adjustable channel cover-plate form ing the last-mentioned end and extending also the length of the socket and also transversely by the stationary end of the socket, and a screw in said transverse part of the cover and adapted to bear against said stationary end of the socket, whereby by adj listing the screw the sections may be ir-mly clamped against said stationary end of the socket.

S. In a vise or similar jaw the combination which are formed of a ixed vertical L-shaped c part and the opposite side and end of which are formed by an adjustable cover, means for adjusting the cover, and metal jaw-sections in the socket.

9. In a vise or similar jaw the combination of a holder-socket one side and one end of which are formed of a fixed vertical L-shaped part and the opposite side and end of which are formed by an adjustable cover, means for adjusting the cover, uniform metal jaw-sections in the socket, the bottom of the socket being approximately V shape.

l Signed this 7 th dayA of November, 1898.

C. J. JACKSON.

Witnesses:

GiDnoN T. CHAPPELL, JEFFERSON T. RAPLEE.

IOO 

